Trolley for electric railways



S. E. SEQRT. TRGLLEY PGR ELECTRIC RALWAY-s,

v(No Model.)

NQ, @6&196.

gli 2 sheets-sheet 2.

ELEGTRIU RMLWAYS. l abemed 'May 17, 1,898.

l"FIC-l.TIOT \l forming of Lettera Fatemi No. $94,196, (lated lli-1y l?, 1898.

el? the invention, Qneli ,e lied inllieer lenliieh e ineke und use lie saune.

Y le impreveinents in e ys, ,zzvxnfl en overhead eendUe- "'eieer, mil in envoi-running trelil by 'the ere ii me 1:keen euslemnry lo mount upon, e @er by e universe-l .vliieli pernlsil1elrelzly bolli laterally sind "ce ier engaging with 'elle e rnennlefl in the upper u erin, and Clie ferm ef Snell me "neen elinesu' universallj..7 living; yside ln-nges. e nml free lateral lieti :L ilnngell een- )be -1 Il tlnl every wily been ee leteml nation have dependent nnen eneh rpese line been to e vente-.et Ev ille eonaluelliir l10w- -n flie smid een-lneer nllhli very exil-rel pe n erllewever Iv en intually ir ,joint pn lili - wins.

. xe b devices le tile eenlelie; Llxe trelv eenilneler er e keep ,it mi er, depending;- ugen vflileli nel 'xvilelnd lreni the mein fen@ ff ille le nl, ilu: lien mid the use ef all liree of these fen-'tures o eer;- strnetien lies been essential te imt success. There are, however, many objections le ille use e5 these intuellywlepemlenl features el Construction, among vvliieli maybe nmned iflie eosc of installing and intuiuing the. eenduefon viibelies, ille liability of the trolley te jump ol ille Conductor-wire and esi-lie* und lere-el; ille erossnvires, ewilelies, und 'pesqevere, the greatweer on the Conductor-:viree mul flanged wheelev at curves, and ille feet that since the, flanged wheels :we necessarilj,7 mounted on en oiled bearing lie current sometimes eel-blinkies ille. eil, n' 'enpen the sneevee Stiel; :incl are worn flat :unl wem' entlle eonilnete l" e l reley blwwn in ille ffl rmvnge and llereinnlfler smilie-Ll lies ne late-ml :notion end.

(lees nelV employ nslieeve er einer eeneet (le vice with side flanges, indeed ennnoa employ ,-,i (leviee having llmiges which will engage with llli, eennetei-\vlies. ,it ila-:ly en l should. be in. eoniliinalien wiel-L the eend 1cum-wires@l ne mvlr'lies, Lliereby greatly reducing of inelzzlli f D 21ml nininninng the een- Llueteie in epermive eenditiun. li, dees nel' weee ille eenfiuelers all.y Curves. lli `niiet. jumn ell the wires nur mieli. Llie crees-rires` in cheri, it has none el lille objeeliennble eelmres of the elder Consi maliens mentioned.

The invention consists in ille eonslruelien end eeinbinetien of perle herein. er deA scribed and eleiined.

In the drawings, Figure 'l is n perspective View ef e. meter-eer, the trolley-device, :md overhead eencluetors. Fig. :2 is n plan view of ille tracks al a switch and Elle eerrespmidn 'lng conductors. Fig. 23 is :i transverse See- 'iienel View el' e join@ between the mein and il, llmneb eenilueter'. Fig. a side elevation el' ille trolley in its preferred form :mil the eendneer und top el a ear. Eig. 5 is e 'ont vien' ei the upper end of the trolley-arm end roller, the letter being partly in section.

Referring te the peres by letters, A repre serre the trolley-erm, which is piveed on e ii iz/.entail rensverse pivot a le time lop eli he moteihea'zr E. A spring l is employed fflA exerts its pov/er te force the free enil ef lille trelley-arm upward no lielil ille {fonte-el 1w 'lei' C against the under :eine ei lli-e @verlie-wl een' doctor-Wire G, and the trolley-arm has not v-f'hile in service any lateral movement relative to the carA The particular stand .l shown in the drawings through 'which the described connecuion with the car is effected forms no part of this applicationy and no claim is here made to it. lt is sufficient for the complete 'understmiding oi the present invention to say that the part thereof to which the trolley-arm is pivoted has no movement relative to the car While the trolley in service and that the spring ij surrounds a nxcd rod l) and bears at its trout end against a nut or shoulder Zi' on said rod. A collar b2, which is movable on the rod, bears against the other end of the spring, and the collar is connected by links if? with the lower end of the trolley-arm.

The conductors G are wires suspended by any suitable means above the tracks, and, eX- eept on curves, they are placed above a line suhstan ially mido-'ay between the tvvo rails. lt is not important, however, that the couductor-Wire should be accurately placed in the described central position. The connections between the main Wires and branch wires and between two main Wires crossing each other should be made by malleable castings l or their equivalents, which project iittle as possible beloiv the Wires, the object being to maintain the contacting lower surface of the conductors at branches and crossovers es nearly possible in the saine plane as at ther places, substantially as shown in No switches are necessary' in the conductors. indeed, it is essential to the most etticient Working of the 'trolley that there should bc nothing`I` connected with the conductors at anypoint which extends or projects much be [dow the general lower surface of the conductor-wi res.

Another advantage of the use of the described trolley is that a plurality of conductors may be used, all of which will contact with the trolley-roller, a construction which cannot be practicallj.' used with trolleys having flanged contacting wheels.

The roller C, which must be longenongh to maintain ontact W the conductor however much the conductor may v ry in position, is prcfera-bi tulular. it may be mounted ou ball-bearings on a spindle which is secured to the fork-arms ci o', ther )y decreasing` triction to such an extent that. the roller is sure revolve freely at all times, it is not neeessary to oil these indi-bearings; but the use ot' oil here will have little it any injurious efy feet, because lpropose to employone or more brushes ll or their equivalent, bearingae'ainst the roller, to takeoff the current. 'l'hcse brushes are secured to the fork-arms by any suitable ineans,and theymay have any desi red eonstruction.- lly the usc of these brushes the current does not pass through the bearing' of the roller, as it las heretofore in the trolleys using the langed wheels.

| The roller C must be mounted in the extreme upper ends ot the forks, whereby no part of the forks shall project above the upper surface of t-he roller. lt the forks or any arm or piece connected therewith did so project, the described operation would be prevented by such projecting" part catching upon the conductors as the roller was moved transversely of and out of cdntact with the Wires. The roller C- is subject to the greatest wear at and near its middle; and therefore I propose to ina-ke the Walls ot the roller thicker at the middle than atthe end. Fig. shows the best construction for effecting this result. ln this construction the roller proper is a true cylinder With Walls of equal thickness at all points; bntasleeve c', made of copper,bronze, or other suitable material and having a convcx surface, is shrunk, east, or otherwise secured upon the roller C between its ends.

rlhe thickening of the roller-Walls near the middle, where most ot' the Wear from the conductor comes, prolongs the life of the roller, i and the construction in Fig. 5 is particularly practical, since when the sleeve c has become Worn it may be removed and another sleeve secured upon the roller. l

lVhen a car equipped Withthe described trolley comes to Aa. switch in the track and passes onto one track or the other, the trolley' contacts Witlrboth the main and branch con ductors until they are separated suftieiently, when one vvire slips off the end ot the roller,

the'conductoizabeve the tracks on which the car is running: Y No switches in the conductor are necessary or desirable.

Many .ariations are permissible in the construction of the' several parts of the equipment as Vdescribed Withoutdeparturo from the invention, which is definitely pointed out in the following' claims:

`l. In an electric railway, the combination ot' a motor-car, and an overhead conductor, with atrolley-arm mounted on the car by meanswifi'iich permit the vertical movement but prevent the lateral movement or" the upper en. `1of the trolley-arm, a horizontal cylindrical ,re ller mounted on the upper end of said trolley-arm, anda convex sleeve secured upon said roller between its ends, substantially as and\.i`or the purpose specified.

0..- in au electric railway, an overhead condudfor-,and a trolley-arm mounted upon a car', combined With av horizontal cylindrical roller 'mounted upon the upper end of the trolley-arm, a sleeve secured upon said roller between its ends, a rod extendingr through the roller and the ends ot' the arm, and ball-bear, ings placed upon the rod, and fitting in the ends of the roller, substantially as described.

In testimony whereof I ailix my signature in presence ot' two Witnesses. SIDNEY ll. SHORT,

lVitnesses:

E. 'liitfns'ro.\, E. l5. GiLcinnsr.

IOO

said roller remaini ng in operative contact with IIO 

